Method for transmitting data in a discontinuous coverage radio network

Abstract

To mash coverage discontinuities, e.g. of high and low bit rate zones, when transmitting especially multimedia data to a terminal (209), it is proposed to store the data of a multimedia data stream's basic flow to a basic cache memory (315) with higher priority than storing the data of at least one enhancement flow of a multimedia data stream to at least one enhancement cache memory (317, 319), at least when said terminal (209) is likely to leave a high bit rate zone. The invention addresses as well a multimedia module (205), a terminal (209) and a computer program product adapted to this handling of multimedia streams.

Description

[0001] The invention is based on a priority application EP 05 292 230.9 which is hereby incorporated by reference. BACKGROUND OF THE INVENTION

[0002] The present invention relates to a method for transmitting data in a discontinuous coverage radio network to a terminal, said discontinuous coverage radio network comprising at least one high bit rate zone, and said discontinuous coverage radio network and / or said terminal comprising a cache memory. It further relates to a module for transmitting multimedia data in a discontinuous coverage radio network to a terminal, a terminal for use in a discontinuous coverage radio network for receiving multimedia data, as well as a computer program product for transmitting multimedia data in a discontinuous coverage radio network to a terminal.

[0003] In mobile networks, the radio performances are usually not constant. Some kinds of traffic, e.g. real time traffic, have a higher priority compared to other kinds of traffic, for example in case of ...

Examples

Embodiment Construction

is provided below. Said description is provided by way of a non-limiting example to be read with reference to the attached drawings in which:

[0034]FIG. 1 is a flowchart explaining a preferred embodiment of the method according to the present invention;

[0035] FIGS. 2 to 5 show the transmission of video data in a discontinuous coverage radio network with pico cells for various positions of a user terminal;

[0036]FIG. 6 shows schematically a first embodiment of a multimedia module according to the present invention cooperating with a terminal;

[0037]FIG. 7 shows schematically a multimedia module according to the present invention cooperating with an embodiment of a terminal according to the present invention;

[0038]FIGS. 8 and 9 show different possibilities for managing the data transmission speed.

[0039] The present invention will be described more in detail with reference to the example of an end-user asking for video streaming service in a heterogeneous network with a discontinuous ...

[0001] The invention is based on a priority application EP 05 292 230.9 which is hereby incorporated by reference. BACKGROUND OF THE INVENTION

[0002] The present invention relates to a method for transmitting data in a discontinuous coverage radio network to a terminal, said discontinuous coverage radio network comprising at least one high bit rate zone, and said discontinuous coverage radio network and / or said terminal comprising a cache memory. It further relates to a module for transmitting multimedia data in a discontinuous coverage radio network to a terminal, a terminal for use in a discontinuous coverage radio network for receiving multimedia data, as well as a computer program product for transmitting multimedia data in a discontinuous coverage radio network to a terminal.

[0003] In mobile networks, the radio performances are usually not constant. Some kinds of traffic, e.g. real time traffic, have a higher priority compared to other kinds of traffic, for example in case of ...

Examples

Embodiment Construction

is provided below. Said description is provided by way of a non-limiting example to be read with reference to the attached drawings in which:

[0034]FIG. 1 is a flowchart explaining a preferred embodiment of the method according to the present invention;

[0035] FIGS. 2 to 5 show the transmission of video data in a discontinuous coverage radio network with pico cells for various positions of a user terminal;

[0036]FIG. 6 shows schematically a first embodiment of a multimedia module according to the present invention cooperating with a terminal;

[0037]FIG. 7 shows schematically a multimedia module according to the present invention cooperating with an embodiment of a terminal according to the present invention;

[0038]FIGS. 8 and 9 show different possibilities for managing the data transmission speed.

[0039] The present invention will be described more in detail with reference to the example of an end-user asking for video streaming service in a heterogeneous network with a discontinuous ...

Images